The Debian CD images are subjected to a battery of tests before release, even more so when the release is a major new version. Debian has volunteers all over the world testing images as they come off the production line, but it can be a lonely task.

Getting together in a group and having a bit of competitive fun always makes the day go faster:

And, of course, they’re a valuable introduction to the life-cycle of a Debian release for future Debian Developers.